JSFiddle - React, Tailwind, and code Playground

JavaScript

try
{

    function Thingy(name) {
        this.setName(name);
        alert("Name is " + this.name);
    }

    Thingy.prototype.setName = function(name) {
        this.name = name;
    };
    
    var obj = new Thingy("Fred");
}
catch (e)
{
    alert("Exception: " + e);
}